Automatic switch for controlling motor-driven automatic machines



I 4 M. POITS. AUTOMATIC SWITCH FOR CGNTRGLLING MOTOR DRIVEN AUTOMATIC MACHINES.

APPLICATION mzn APR. 9. 1919.. 1,403,626.

I Fr

1T5 fifi- INVENTOR.

Patented Jan. 17, 1922..

L, M Fons.-

OLLING MOTOR DRIV-EN AUTOMA-TI-C MACHINES. APPLICATION flLED APR. 9, 1919.

Patented Jan. 17,1922.

' AUTOMATIC SWITCH FOR coma v INVENTOR. 100/5 /l. "'0 #5.

BY ATTORNEK.

application-being a continuation in port of WHEEL? T ES LGUIS M. HOTELS, G BALTMQRE, MARYLAELTYZ),

PATENT OFFICE.

AeSIGN'QB, BY HIE-SHE ASSIGNMENTS,

Ti) AMERIGAN TELEPHGNE AND TELEGRAPH G-SMIPANTZ', OF NEW YORK, N. Y., A

CORPORATION OF NEW YUBK.

. AUTtJMdTIC SWITQH FOB GGNTROLLING MOTDB/DBIVEN AUTOMATIC MACHINES.

specification of Letters Patent. Patented Jan, 17, 1922.

Application filed April 9, 1918. Serisiiqo- 288,841.

Driven Automatic hioehines, of which the following is a specification.

This invention relates to mot-or control mechanisms, and more particularly it relates to means for automatically starting and stop ping the motor drive of automstiemschines such as printing telegraph; receivers and transmitters, automatic typewriters, adding ma-chlnes, and similar (lQV1CS Where, during the "mo-f normal operation, it is desired th tor should be operating contnu usly this an application for Letters Patent of the United States filed December is e, 1915, Serial No. 58,830. 7

It is the object of this invention to provide automatic means to insure that the motor is not. kept running when themcchine isnot in use.

The invention is specifically illustrated as applied to the control of the motor drive troi magnet and the lovers for co the ircu'ltof the motor; Fig. 2% is scneu of e printing telegraph machine. and to z i tain the object above noted. provides u. main control magnet such the main line magnet, which during the period of inoperntion is maintained energized by the closure of the line circuit. Through a system of levers cooperating with the armature of the line magnet when the latter is energized, a tw ce-ling shoe is brought into engagement with a Worm carried by the motor shaft, which shoe. after a predetermined degree of rotation of the motor shaft. operates to interrupt the current supply of the motor. When the machine is again to be put into operation, an opening of the-circuit of the control magnet allows this traveling shoe to he disengaged from the Worm and returned to its initial position under the influence of :1 spring or other suitable mechanism, thereby closing the mo tor circuit.

The-invention will he more clearly understood by reference to the accompanying drawing in which Fig.1 is a fragmentary View of the driving mechanism of such nuic-hine; Fig. 2 shows the rejietion of the conis carried on square shaft 6.

.posite side of gear isanother washer 3 when gear extends over one end of arm 16, which isin other arm 26, hnvin a diagram of the-circuit connections; Fig. 4 is a detail. view of e portlon of the apparatus shown in Fig. 2; Fig. 5 is a plan View showcontrol magnetis closed and the motor is stopped.

. In Figure 1, l is an electric motor. Shaft 2 of motor 1 carries a gear 3 which meshes with a gear 4 mounted on a round sleeve 5 focrot'ntion independent of sleeve 5. Sleeve Mounted rigidly on shaft 6 is a Washer-7. On the opu'hich receives tension of a spring 9,, the other end of which presses ageinstnusher 3.0 fest to the end of shaft 6. The pressure created by spring 9 between-gear 4 and discs 7 and. 8 causes shaft 6 to have a tende'ncy to rotate whenever gear 43.- is rotated by motor i. Shaft 6. however, (see Figure 2) has mounted thereon s. notched disc 11. A hook on slide 13 is adapted to engage notches in disc 11 under tension of spring 14;. and thereby prevent shaft 6 from rotating even at is rotating. Lip 15 on slide 13 turn pivoted to arm 1?, arm 17 is under tension of a spring 18 which tends to rotate arm 17' about pivot 19 and carry arm 16 to the left. so that tip 20 will be over the end of arm 21 on armature 22. Arm 1? is permitted to more tip 20 to the left only When shaft 6' stopped by hook 12. Arm 16 has on one end a notch 23 which is engaged by. an arm 2%. fast to a shaft 25. Shaft 25- carries anprojection 27, adapted to engage the thread of a screw '28 on sh aft 2. Projection 27 will be permitted, under tension of spring 25 to engage thread 28 only when arm 16 is to the extreme right. At other times it will be held out of engagement. Shaft carries an insulating sleeve 30, which in turn carries a. metal ring 31. Pressinc; on. opposite sides of ring- 31 are two contact springs 32 and 33.

Reference will now be had to the electrical diagram Figure 3.

A magnet 34 is adapted operate armature 22. Magnet 34 is conctcd in a. circuit includinq a source of dicur n 2. he 36 undo 't-h hey 36. Contact sjorinc' incense is connected to negative and contact spring is connected to one terminal of motor 1,

circuit or could be a local operating circuit in an automatic mechanism other than male graph. Assuming that the motor has been started in the manner to be described hereinafter, the control apparatus will be in the position shown in Fig. 2 and ready for the reception of telegraphic signals,- as described in application Serial No. '66830 above referred to, ll" magnet -34 is now energized motion will be communicated through arm 21, arm 16, slide 13, to hook l2, and shaft 6 Will be allowed to rotate, and as soon as magnet 3 l i s cleenergizecl shaft 6 will be stopped by hook 155 engaging a notch in clisc 11. Whenever shaft 6 rotates it will be noted that a cam 38 on shaft 6, will move arm 17 to theright which in turn will move arm 16 and allow shaft 25 to rotate under tension or spring 29 until projection 27 en.- gages thread 28, since shaft 2 is rotating; shaft 25.will he moved to the right and along with it metal sleeve 31.. lflhowever, magnet 34- is cleenergized shaft- 6 will come to rest, arm 16 will move to the left and dis engage projection 27 from threaclfiS and allow shaft 25 and along with it sleeve 31 to move to the left under tension of spring 29. It will be noted then that if key 36 is opened and closed, as for example, for the purpose of sending code signal-s, sleeve 31 will be moved to the right after each revolution of the shatt,'but will not move tar enough, before being allowed to return, for sleeve 31 to move from under contact springs 32 and 33; I

ll? magnet 34 remains energized for a consiclereble time, as when the line circuit is finally closed at the encl of atelegraphic message, the projection or shoe 27 will be brought into engagement with the worm 28, as described above, and will remain in engagement therewith until the conductin sleeve 31 has been moved. to theiright (Fig.

'5) far enough to pass beyond the springs I 32, 33, which will then rest on thesinsula'ting band The circuit of the motor 1 is thus broken and the motor stops. The control ,mechanism is then in the position shown in Fig; 6.

When the apparatus is again to be put into operation, a tleenergization or magnet caused for example by a preliminary openingof the line circuit, allows armature 22 to fall off, thus permi ting slide 16 to move back to the position shown in Fig. 2

under the influence of spring 18. By this movement shaft 25 is rotated to lift shoe 27 clean-oi the worm 28, and sleeve 31 snaps 'tothe left under the influence of spring 29 and conipletesthe circuit between springs 32 and 33, thus starting the motor.

I claim:

l. in combination with a machine shaft, an electric motor sclaptecl to clrive the same continuously, a member adapted to be intermittently driven by said continuously operating shaft, a magnet to control the starting of said intermittently operating member, a switch in the circuit of said motor, and means controllerl by said magnet to open said switch dependent upon the length ot time said magnet is energized.

2. in combination with a machine shaft, an electric motor adapted to drive the same continuously, a member adapted tube intermittently driven by said continuously opcrating shaft, a magnet, means controlled by the energizing of saicl magnet to control the starting of said intermittently operating member, a switch in the circuit of said motor, and means controlled by the deenengizing of said magnet to close said switch.

3.- In a machine, an electric motor, a Worm driven continuously by ssid motor, a switch in the circuit-of said motor, an arm adapted to engage said worm, a member intermittently driven by said motor, means operatecl by said intermittently driven mcmmr to corn tr'ol the engagement of said armvwitli said wornuend means controlled by saiclerm to operate said. switch.

in testimony whereof I afiix my signature.

LOUISM. ror'rs. 

